1 files changed, 81 insertions, 0 deletions
diff --git a/src/ui/ui.internal.h b/src/ui/ui.internal.h
new file mode 100644
index 0000000..7c53bd4
--- /dev/null
+++ b/src/ui/ui.internal.h
@@ -0,0 +1,81 @@
+#ifndef UMPS_UI_INTERNAL_H_INCLUDED
+#define UMPS_UI_INTERNAL_H_INCLUDED
+
+#include "../ui.h"
+#include "config.h"
+#include NCURSES_INCLUDE
+
+#define UI__WINDOW_DOCK_TOP    (0u)
+#define UI__WINDOW_DOCK_BOTTOM (1u)
+#define UI__WINDOW_DOCK_LEFT   (2u)
+#define UI__WINDOW_DOCK_RIGHT  (3u)
+#define UI__WINDOW_DOCK_CENTER (4u)
+
+#define UI__WINDOW_FOCUS_NONE (999u)
+
+#define UI__WINDOW_TYPE_BASE (0u)
+#define UI__WINDOW_TYPE_DOCK (1u)
+#define UI__WINDOW_TYPE_ROOT (2u)
+
+#define UI__WINDOW_DOCK_MAX UI__WINDOW_DOCK_CENTER+1
+
+/* concrete type definitions */
+
+/* called to refresh the window (should refresh children as well) */
+typedef void (ui__draw_proc)(struct ui_window_base *);
+
+/* called to recalculate the layout of the window (for resize) */
+typedef void (ui__layout_proc)(struct ui_window_base *);
+
+struct ui_window_base {
+  unsigned type;
+  struct ui_window_base *parent; /* the parent of a window manages its memory */
+  WINDOW *cwindow; /* ncurses window */
+
+  ui__draw_proc *draw_proc;
+  ui__layout_proc *layout_proc;
+};
+
+struct ui_window_dock {
+  struct ui_window_base super;
+
+  struct ui_window_base *children[UI__WINDOW_DOCK_MAX];
+  float childsizes[UI__WINDOW_DOCK_MAX];
+
+  unsigned focus;
+};
+
+struct ui_window_root {
+  struct ui_window_dock super;
+
+  struct ui_window_base *floating;
+};
+
+/* internal utils */
+
+/* in-place constructors */
+void ui__init_window_base(struct ui_window_base *);
+void ui__init_window_dock(struct ui_window_dock *);
+void ui__init_window_root(struct ui_window_root *);
+
+struct ui_window_base *ui__find_focused(void);
+
+/* callback utils */
+void ui__call_draw_proc(struct ui_window_base *);
+void ui__call_layout_proc(struct ui_window_base *);
+
+/* destructor */
+
+void ui__destroy_window(struct ui_window_base *);
+
+/* docked window utils */
+
+void ui__dock_add_child(struct ui_window_dock *, struct ui_window_base *, unsigned position, float size);
+void ui__dock_default_draw_proc(struct ui_window_base *base);
+void ui__dock_default_layout_proc(struct ui_window_base *base);
+
+/* root window hooks */
+void ui__root_draw_proc(struct ui_window_base *);
+void ui__root_layout_proc(struct ui_window_base *);
+
+#endif /* include guard */